Qualcomm Software Engineer interview questions

on campus drive. worst interview experience in my life.They told that have 3 rounds(2 TR,1 HR) but conducted 3 HR rounds.I never saw or heard about a company recruiting people for developer by conducting 3 hr round. They were asking same questions 3 round.I don't know why they conducted 3 rounds.

It was a phone interview. The interviewer first asked me about my projects and I described the detail. He then asked some questions about my projects. Later, he asked me questions about machine learning and c++. Then he told me I will be notified if I have more interviews.